Milltek Non-Resonated Cat-Back Exhaust - Audi B6 A4 1.8T Quattro - 90mm GT Tips - SSXAU511

Milltek Non-Resonated Cat-Back Exhaust System for Audi B6 A4 1.8T Quattro - direct factory fitment, hand-finished T304L stainless steel construction with 2.50" mandrel-bent piping and 90mm GT90 polished trim tips. Replaces the factory cat-back system with no modification required.

The non-resonated design eliminates the OEM resonance chamber, delivering a more aggressive exhaust note at full throttle while maintaining OEM hanger compatibility. T304L stainless steel resists corrosion and thermal cycling; all seams are TIG-welded and hand-finished to Milltek's specification. Engineered for direct bolt-on installation using existing OEM hangers and mounting points.

Fitment

• Audi A4 Cabriolet B6 1.8T Quattro (2003-2005)
• Cat-back system (replaces from rear silencer back; retains factory downpipe and secondary catalytic converter)
• Uses OEM hangers and mounting brackets
• 90mm GT90 polished stainless steel tip included

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 63.5mm (2.50")

Fitment

• Audi > A4 > 1.8T B6 quattro Cabriolet > 2001 to 2005

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.